to feel sad or disappointed about something that happened
起こったことについて悲しみや失望を感じる (okotta koto ni tsuite kanashimi ya shitsubou o kanjiru)
"She regrets over not spending enough time with her parents."
"彼女は親と十分な時間を過ごせなかったことを後悔している。" (Kanojo wa oya to jūbun'na jikan o sugosenakatta koto o kōkai shite iru.)
to remain loyal to your values or beliefs
to reduce tension after a disagreement
to regard someone or something as inferior or less worthy
to return to a previous state or routine after a change
to allow someone to know personal or emotional details about...
to make international trade easier by removing barriers